Barricade

barricade: Usually a male, the barricade is the person who stops on the floor, during a milonga, to give instruction to thier partner. The barricade can be identified by outstreched arms and open legs (making thenselfs big and impassable).

It might seem that the barricade is trying to sheild a hole in the floor that thier partner would like to crawl into to avoid the humilation.